Stenopaic Slit Lab Report

In Figure 2, the lower meniscus lies below the 3 mL line and 4 minor gradations that signify 0.1 values. Estimating the uncertain digit to be 0.04 mL, the reading we record for this particular buret is 3.44 mL.

suspected it consisted of a single curved line and a single straight one. For my retests, I studied it

4) This line is much like a line on a geologic topo map. Explain the

Another example where this tool would add to clarity and better care is the emergency call to a sleeping senior colleague for advice about patient management. When woken in the night it takes some time to absorb the facts and respond. This is greatly aided by a clear presentation of the situation, the background, the assessment and the proposed treatment. In the surgical situation it is possible and even quite likely that the senior colleague is

Photcoagulation: A focal is used to burn the areas of the retina where the abnormal

As previously stated in the results section of this report, if there is a breakdown of the blood-ocular barrier, the amount of proteins present within the aqueous humour will tend to increase. When viewing the anterior chamber with a slit lamp, this increase in protein content will result in light being scattered. Flare is the term given to the presence of this scattered light. Flare is a common symptom seen in acute iritis and therefore would likely be seen in this patient with the use of a slit lamp.

Tests can be performed to look at whether your eyes are moist enough for laser eye correction.

provides a very broad overview of various blinding strategies in diverse areas. The editors suggest

The height and width of this optotype is designed to be five times the thickness of the stroke width and gap width, therefore the size of each critical detail is 1/5th of the overall height (Kalloniatis & Luu, 2005). Four stimulus sizes were used in the experiment as visual acuity was to be tested at four eccentricities (0˚, 20˚, 40˚ and 60˚). These four stimulus sizes were calculated using the approximate minimum angle of resolution (MAR) of each eccentricity obtained from Millodot et al.’s (1975) normal data. This value was then used to find the gap size and hence the stimulus size using a distance of 600cm. The reason for using the distance value of 600cm was because it is close to the threshold and therefore would be the starting point of stimulus presentation for each of the eccentricities. The formula used was:

The aim of the treatment is to provide symptomatic relief as well as support AS’s visual system to allow AS to maintain clear and comfortable binocular vision at distance and near. The primary cause of her distance and near blur is accommodative in nature, so the treatment is aimed at managing her accommodative system to a point where her visual system is able to recognise and respond to a defocussed image1,4.

Glaucoma is a "multi-factorial, complex eye disease with specific characteristics such as optic nerve damage and visual field loss". It embodies many conditions, all of which can harm or damage the optic nerve and the retina, which can solemn lead to blindness if left untreated. Generally, glaucoma is connected to and is associated with high IOP. IOP fluctuates throughout the day, so it can be both high and low and different periods of time. IOP can occur when the drainage channels within the eye become slightly or fully blocked, therefore preventing the fluid located within the eyeball (aqueous humour) from draining or excreting properly and resulting in a build-up of pressure. Once damage or loss of vision has occurred, it cannot be reversed, but treatment can help prevent further harm to the eyes. Often, treatments start with giving eye drops, which can work toward reducing IOP by either reducing the production of aqueous humour or by assisting fluids out of the eyes. Traditionally speaking, the screening which were done for glaucoma happened at an optician’s check-up. Now however, there are tests which measure the IOP, by using snapshot reading. With this method, even borderline cases can be missed. Thankfully, a new, smart electronic contact lens called the Triggerfish Sensor is currently being used for the first time in fight against a leading cause of blindness. This sensor could assist experts diagnose the eye problem earlier and treat it more efficiently and effectively. The Triggerfish lens is made up of soft silicone and is a single use item piece. The sensor on the lens contains a microprocessor, an adhesive receiving antenna and a small battery-operated recorder. The antenna is strapped/fixed to the side of the head and around the eyes and continuously receives data input or wireless readings from the chip in the lens. After the 24-hour period that the lens is on

Sub-Point One: When preforming the surgery the surgeon will create a thin flap in the cornea using either a

Close your right eye and stare at the cross with your left eye. At this point, you should also be able to see the black dot.

I looked into the physics of the eye itself and into corrective lenses because I wear glasses. The human eye is a very complex piece of anatomy. Like a camera, the eye is able to refract light and produce an image that can enable someone to see.

It is clear from the bending moment diagram that there is a point except ends where bending moment equals to zero. Such a point have a different of bending moment on its two sides (left and right) is known as a point of contra-flexture. It can be easily found by using moment equation about that point and equate it to zero. Taking that reference point as “X”, we obtain: